G7 FP Physical Science 3.5
Activity
❏ With your partner, make a list of:
1. something that you need energy to do
2. some of the types of fuel(燃料) that you know.
Quick experiment - stand and move a book up and down
❏ What do you need in order to move the book?
❏ Where does your energy come from?
ENERGY …...
• Energy is the ability to make things move.
• It is also something that must be changed or
transferred in order to do something.
• Any living thing or object that moves does so
because of some type of energy.
The unit for measuring energy is
called the joule (J).
Different types of energy
❏ What do you think will happen if you let go
of your book?
Why did your book drop to the floor?
REASON …..
Books have energy stored in them. This is called
gravitational potential energy. When you released
the books, gravitational energy forced the books to
move toward the floor.
WHAT DOES THE FORCE OF GRAVITY DO TO
OBJECTS?
Energy stores and transfer
There are many different ways
in which energy is being
stored （储存） or
transferred （转换） around
you all the time.
Different types of energy - kinetic energy
❏ Does this car have energy?
❏ How does the car move?
❏ What form of energy is
used to make the car
move?
Kinetic energy - energy stored
due to movement of an object.
Different types of energy - chemical energy
Chemical energy - energy stored in food, batteries
(电池), chemical fuels such as wood, oil and coal.
Different types of energy - chemical energy
Thermal energy - heat
energy stored in hot
objects and transferred to
colder objects.
Different types of energy - thermal energy
Elastic potential
energy - energy stored
when things are
stretched(拉伸) or
squeezed(挤压) to change
their shape.
Different types of energy - gravitational potential energy
Electrical
energy the flow of
current(电流) in
a circuit(电路)
transfers
electrical
energy.
Sound
energy Energy
transferred
from
vibrating(震动)
objects.
light energy visible energy
from luminous
objects that you
can see.
textbook p. 107 how many different forms of energy you can detect?
What Type of Energy is
This?
What Type of Energy is
This?
What Type of Energy is
This?
What Type of Energy is
This?
What Type of Energy is
This?
What Type of Energy is
This?
What Type of Energy is
This?
Energy is not created or destroyed
it can only be TRANSFERRED.
Storing energy - read textbook. p.108, answer the following questions
1. What are the examples of storing chemical
energy?
2. How to store gravitational potential energy?
3. What are the other two more examples of energies that
can store? Please explain.